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Energies 2018, 11(1), 147; https://doi.org/10.3390/en11010147

Analysis of Combined Cycle Power Plants with Chemical Looping Reforming of Natural Gas and Pre-Combustion CO2 Capture

1
Department of Energy and Process Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway
2
SINTEF Materials and Chemistry, 7034 Trondheim, Norway
*
Author to whom correspondence should be addressed.
Received: 3 December 2017 / Revised: 4 January 2018 / Accepted: 5 January 2018 / Published: 8 January 2018
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Abstract

In this paper, a gas-fired combined cycle power plant subjected to a pre-combustion CO2 capture method has been analysed under different design conditions and different heat integration options. The power plant configuration includes the chemical looping reforming (CLR) of natural gas (NG), water gas shift (WGS) process, CO2 capture and compression, and a hydrogen fuelled combined cycle to produce power. The process is denoted as a CLR-CC process. One of the main parameters that affects the performance of the process is the pressure for the CLR. The process is analysed at different design pressures for the CLR, i.e., 5, 10, 15, 18, 25 and 30 bar. It is observed that the net electrical efficiency increases with an increase in the design pressure in the CLR. Secondly, the type of steam generated from the cooling of process streams also effects the net electrical efficiency of the process. Out of the five different cases including the base case presented in this study, it is observed that the net electrical efficiency of CLR-CCs can be improved to 46.5% (lower heating value of NG basis) by producing high-pressure steam through heat recovery from the pre-combustion process streams and sending it to the Heat Recovery Steam Generator in the power plant. View Full-Text
Keywords: pre-combustion CO2 capture method; chemical looping reforming (CLR); combined cycle power plants; thermodynamic analysis pre-combustion CO2 capture method; chemical looping reforming (CLR); combined cycle power plants; thermodynamic analysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Nazir, S.M.; Bolland, O.; Amini, S. Analysis of Combined Cycle Power Plants with Chemical Looping Reforming of Natural Gas and Pre-Combustion CO2 Capture. Energies 2018, 11, 147.

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